There are so many poorly written themes and plugins that cause Javascript conflicts with popular well written plugins like CF7. You have my sympathy.
This is could be due to a JavaScript conflict with either your current WordPress theme or one of the other plugins you are using – see Contact Form 7 Email Issues – there is a link there that covers JavaScript Conflicts.
Use Firebug or Chrome Dev Tools to examine JavaScript conflicts in detail.
Remember that a problem in one script can cause issues in another.
For example, some jQuery errors can stop jQuery processing any more script, which can make the culprit hard to find. A jQuery error in one of your plugins or your themes javascript files can stop jQuery processing before it gets to the CF7 script.
See http://www.wpexplorer.com/plugin-conflicts/ for general guidance.
I use Visual Composer with CF7 without problems.
Step by step approach to problem solving
1. Switch temporarily to a WordPress default theme (Twenty Eleven etc.) and see if the problem goes away.
If it does, you’ve most likely got a problem with your current WordPress theme.
If switching to default theme doesn’t help it could be one of the plugins you are using that is causing the problem.
2. Disable all plugins other than Contact Form 7
If doing that solves the problem, you can then add back each item – one by one, until you find the cause of the problem.
Thread Starter
Sarah
(@fuzeinteriorsconz)
Thanks, yes it appears to be Visual Composer. Thanks for your time
